package com.example.blog_system.dao;

import com.example.blog_system.model.domain.Article;
import com.example.blog_system.model.domain.Statistic;
import org.apache.ibatis.annotations.*;

import java.util.List;

@Mapper
public interface StatisticMapper {
    //新增文章对应的统计信息
    @Insert("INSERT INTO t_statistic(article_id,hits,comments_num) values(#{id},0,0)")
    public void addStatistic(Article article);
    //根据文章id查询点击量和评论量相关信息
    @Select("SELECT * FROM t_statistic WHERE article_id = #{articleId}")
    Statistic selectStatisticWithArticleId(Integer articleId);
    //通过文章id更新点击量
    @Update("UPDATE t_statistic SET hits = #{hits}" +
            "WHERE article_id = #{articleId}")
    public void updateArticleHitsWithId(Statistic statistic);

    //通过文章id更新评论量
    @Update("update t_statistic set comments_num =#{commentsNum} "+
            "where article_id = #{articleId}")
    void updateArticleCommentsWithId(Statistic statistic);



    //根据文章id删除统计数据
    @Delete("DELETE FROM t_statistic WHERE article_id = #{aid}")
    public void deleteStatisticWithId(int aid);

    //统计文章热度信息
    @Select("SELECT * FROM t_statistic WHERE hits!='0' " +
            "ORDER BY hits DESC,comments_num DESC")
    public List<Statistic> getStatistic();

    //统计博客文章总访问量
    @Select("SELECT SUM(hits) FROM t_statistic")
    public long getTotalVisit();

    //统计播客文章总评论量
    @Select("SELECT SUM(comments_num) FROM t_statistic")
    public long getTotalComment();


}
